[dsallean]

Originally Posted by Gelbster

Just be careful not to loose the vacuum when operating the valve/connecting the suction tube to the coolant. And of course do not pull more than the recommended max vacuum
I found it helpful to have the coolant in translucent containers to avoid sucking air. I found used 1 gal. milk jugs worked well with my Airlift clone.

That's a good point. I am thinking 20 psi Max for the Airlift. Perhaps slightly less would be sufficient to load the system with coolant.

Originally Posted by kk2002s

I did exactly the same steps you did except I did 2 distilled water flushes because I to had Green coolant. I never got more than 4 - 5 gals out each time.
Once you get the vacuum up before refill, let it stand for a couple minutes. If it holds the recommended vacuum level, that should indicate you have no leaks.
I was prepared for up to 6 gals replace with 3 gals pink coolant and 3 gals of distilled water.
Now I have about 2 gals of 50/50 left over

I have enough to make 6 gallons of pretty pink coolant. If all remains the same after flushing with water I will have some left over.

Originally Posted by JayG

You can also use one of the airlift "plugs and put in in the coolant line to the front and blow some compressed air through,. It should push out a bit more coolant. As JFP said, you won't get it all out

I thought that it would be sensible to somehow blow the coolant out instead of relying on the gravity approach but I couldn't really find much on that.